Sash-window.



B. J. BROWNJOHN.

SASH WINDOW.

APPLICATION FILED AUG. 29, 1911.

1,097,524. Patented May 19, 1914.

UNITED STATES PA'LFENT QFFICE.

BENJAMIN JOSEPH BROWNJOHN, 0F PETERSHAM, SYDNEY, NEW SDUTH WALE$, AU$TRALIA.

SASH-WINDOW.

To all whom it may concern Be it known that I, BENJAMIN Josnrn BnowNJoHN, a subject of the British Em pire, residing at 22 Weston Street, Petersham, Sydney, New South Wales, Australia, have invented new and useful Improvements in Sash-l Vindows of the *vVeightless Reversible and other Types, the objects being to insure various movements for ventilating, cleaning, detaching, &c., being carried out with greater convenience and mechanical simplicity than heretofore.

This invention relates to sliding sash windows comprising a frame and two counterbalanced sashes, with the sashes constructed and hung so that they may be folded inward into a room for the purpose of facilitating cleaning and repair.

When sashes of this type as so infolded the weight of the infolded sash is relieved from the balance cord if the balance cord be attached to its lower part and thereupon the counterweight causes the lower end of the infolded sash to be swung up. It is for this reason impracticable to handle such sashes unless means are provided for locking them at the lower part in any certain relative position in the frame by means which permit either or both sashes to be infolded about its points of attachment to the balance cords.

My invention consists in means for automatically fixing the cord supported pivot centers on which the sashes are foldable in relation to the frame immediately the sash is folded inward from its vertical position in the frame. It is thus made possible to handle the sash quite readily with a certainty that the cord supported lower portion of same will remain a fixture in relation to the frame and will be freed again automatically when the sash is folded back and restored to its normal running position in the frame. These means consist in the attachment of the counterbalance cord ends to the sashes through slippers which work in grooves in the frame jambs and are caused to bite and jam in the same frame grooves when the parallel position of the sash in re lation thereto is varied.

In the accompanying drawings :Figure 1 is a transverse vertical section through a window frame and sashes constructed and fitted according to my present invention.

Specification of Letters Patent.

Application filed August 29, 1911.

Patented May 19, 1914. Serial No. 646,767.

Fig. 2 is a fragmentary front elevation corresponding to Fig. 1. Fig. 3 is an elevational view of the slipper attachment on the sash stile shown working in the frame jamb groove. Fig. 4c is a similar elevational view of the slipper and cord attachment as seen when the sash is removed from the frame. Fig. 5 is a front sectional elevation corresponding with Figs. 3 and 4, taken from the left side thereof. Fig. 6 is a corresponding sectional plan. Fig. 7 is an end elevational view of alternative form of the automatic grip cord attachment slipper device as seen attached to the sash stile when the sash is removed from the frame. Fig. 8 is a vertical section corresponding with Fig. 7. Fig. 9 is a sectional plan corresponding with Figs. 7 and 8.

The frame'l is rabbeted as shown at 2 to provide working clearance for the lower sash 3, which is wider than the upper sash 4..

5 are pulley wheels mounted on the frame jambs so as to give a fair lead to the sash cord 6, the front fall of which supports the lower sash 3 and the rear fall of which supports the upper sash 41-. The upper parts of the sashes are held slidably in the frame by means of bolts 7 which when pushed out ward as indicated in Fig. 2, take into verti cal slots in the frame jambs and form running guides for the sashes. At the two cer tain positions shown at 8, Fig. 2, the bolts 7 may be shot into holes bored at the bottom of the frame jamb slots so that when so inserted in these holes the sashes will be locked in the frames effectively and the usual sash looks or latches associated with the sash rails may be omitted.

If the holes 8 or similar holes are made a little lower than shown in the drawing, either sash may be fixed in the frame secure from external interference and so as to leave openings for ventilation above each of them respectively.

To obtain a larger measure of ventilation Without moving the sashes vertically in the frame wing plates 34 may be fitted at either side of the frame having a series of holes 35 bored in them to take the bolts 8. When the sashes are canted slightly inward and secured in angular relation to the frame by inserting the bolts 8 into the holes 35, the sashes are effectively secured against eX- ternal interference while as large an open area is obtained as is required to admit ventilation. The ends of the wing plates 34L are bent inward or fitted with a fixed stop ll to limit the inward canting of the sashes.

hen the bolts 7 are retracted the upper parts of the sashes are free to be swung inward in the room about their points of support on the lower ends of the falls of the ropes 6 respectively. It is in the means for attaching these cord ends to the sashes in such a manner that the inward movement of the sash will lock the pivotal points in the fra1ne, that my invention consists chiefly; but it includes also the means whereby the sashes are fixable in the frame so as to admit ventilation, and means whereby the guide slippers are made adjustable so as to hold the sashes in close sliding fit with the frames and thereby avoid rattling.

Referring now to Figs. 3 and 4, 10 is the frame jamb, 11 slipper guide slot therein 12 checks or nicks cut in one side wall of the slot 11. is a plate which may be conveniently made circular and it is attached to the side of the sash by a central pivot screw 1e on which said plate may be rotated relatively to the sash to effect adjustment. A sector shaped slot 15 is cut in the plate 13 to take the check pin 16 which is offset inwardly from the side of the rocker slipper 17 which also is centered on the pivot pin 14. 18 is a sector slot cut in the plate 13 to facilitate setting of same, and 19 is a fixing pin inserted through the sector slot 18 into the sash body. It will be observed that the angular position of the slipper 17 in relation to the sash is controlled by the setting of the plate 13, inasmuch as the movement of the said slipper relatively to said plate about the mutual center point 14: is dependent upon the position of the guide sector slot 15 at the ends of which the offset pin 16 becomes checked. The setting of the plate 13 on the sash so as to limit exactly the permissible angular movement of the slipper 17 is efiected by easing back the check pin 19, turning the plate 13 as may be required around its center 1e and then setting said pin 19 in the slot 18, the edges of said slot being ehamfered to afford the head of the screw 19 an eflective bite thereon.

The slipper 17 is set so that when the sash stands vertically it (the slipper) is restrained by the contact of the offset pin 16 with the end of the sector slot 15 so that the slipper may just run freely in the arnb slot 11, making easy working contact with the walls of said slot. As the slipper is in effect a lever on which the rope 6 acts, its nose 36 is held up against the side of the slot 11 in which it works while the reaction of this pressure keeps the sash forced over toward the rabbeted face 37 and so prevents looseness and consequent rattling.

When the sash is folded inward in the direction indicated by the arrow in Fig. 4c, the slipper 17 is no longer held in the vertical position but is free to move around its center 1 under obedience to the lifting effort of the cord 6, said cord being passed through a hole 20 in the lower end of it and knotted below said hole as shown at 21. In this position of freedom, the slipper 17 is pulled across the guide slot by the cord 16, and jams its lower end 22 in one of the checks or notches 12 in one wall of the frame jamb slot, and being thus jammed and wedged in the slot the lifting effort of the cord 6 is no longer effective to raise the sash, and the pivot screws 14- thus become in effect fixed points in relation to the frame and the sash may be folded inward about them.

A similar effect is obtained by somewhat different means as shown in the alternative arrangement Figs. 7 to 9. In those figures 23 is a disk which is countersunk as shown at Figs. 8 and 9 into the side of the sash. This plate has cut in it a sector slot 2 1 through which passes a biting screw 25 which when driven home fixes the angular position of the disk plate in relation to the sash. This plate is carried on a center screw 26. 27 is an offset snub projecting from the outer side of the disk 23. Its central part forms a pin which carries the slipper 28 which runs in the guide slot 29 in the frame jamb 30. The collar part of the snub 27 is formed as a cam as shown at'31, Figs. 8 and 9. This cam portion coacts with the cam portion 32 offset from the side of the slipper 28. lVhen the sash is in its normal vertical position in the frame, the cam portions 31 and 32 do not act against each other, but when the sash is canted (see Fig. 7 in relation to the frame, the cams 31 and 32 are caused to ride the one over the other and the slipper 28 at either side of the frame is then pressed hard outward against the bottom of the jamb slot 29, thereby ing the rotational center 27 about which the sash moves in relation to the frame, the lifting effect of the cord 6 being insufficient to overcome the frictional resistance of the slippers 28 when they are so pressed hard out against the bottom of the frame jamb. Battling of the sashes in the frame is in this construction prevented by setting the plate 23 on the sash so that the pin 27 holds the outer side 38 of the slipper 28 neatly up to the side 39 of the frame groove or jamb slot 29 and the face of the sash therefore tight up to the rabbet face 40.

It is obvious that the invention is equally applicable to sliding sash windows in which the sashes are independently hung by means of cords carrying counter-balance weights.

The mode of operation is as follows z-Referring to Figs. 1 to 6, the sashes being in any certain position in relation to the frame,

the guide bolts 7 of either sash are retracted and the sash is then swung inward into the room. lhe slipper 17 being no longer restrained in the vertical position in which it runs freely in the guide slot 11, is pulled around by the cord 6 so that its toe 22 in one of the nicks 12 in one wall of the jamb slot 11. Further upward movement being thus checked, the pivot point 14 becomes in effect fixed in relation to the frame and the sash may then be folded right in ward without risk of the upward pull of the sash cord lifting its lower part. Referring to Figs. 7 to 9, a similar inward movement of the sash has the effect of bringing the cam pieces 31 and 82 into engagement, whereby the slippers 528 are forced outward against the bottoms of the jamb slots and the pin centers 26 become in effect fixed in relation to the frame, and the sash may be turned freely into the room without risk of its lower end being lifted by the upward pull on the sash cord 6 in either case the outer side of the slipper which forms its rubbing face makes a neat sliding fit against one side of the jamb groove, this setting at the same time holding the sash neatly up to the rabbet face with only working clearance, thereby avoiding looseness of the sash in the frame and so preventing the possibility of rattling. To allow ventilation without opening the sashes in a way which will permit access from outside, the bolts A are withdrawn, the sashes slightly opened and these bolts then shot into other stop holes whereby the sashes are fixed leaving a small gap above the upper sash and if necessary also a small gap below the lower sash. Of the bolts 8 being withdrawn, the sashes may be canted inward and fixed in an angular position in relation to the frame, the bolts 8 being in that case shot into one or other of the holes 35 in the Wing pieces 34.

What 1 claim as my invention and desire to secure by Letters Patent is 1. The combination with a sliding and infolding sash of rotatable carrier plates adj ustably fixed on the sash stiles, slippers slidable in and engageable with vertical grooves in the frame and pivotally mounted on the carrier plates and having counterbalance cords secured to them, and means engaging the carrier plates to the slippers and holding them in slidable relation to the grooves while the sashes stand vertically, said means being arranged to frictionally lock said slippers in the grooves and thereby fixing them therein when the sash is infolded.

2. A sliding and infolding window sash attachment con'iprising a rotatable plate 13, central pivot screw 1 1, segmental slot 15 therein, curved slipper 17, counterbalance rope 6 attached near the lower end of said slipper, a check between the slipper and the plate 13, and notches in one wall of the groove engageable with the toe of the slipper, when the movement of the slipper is not restrained by the check.

3. The combination with a sliding sash window, of guide grooves 11 in the jambs thereof, curved slippers 17 adapted to run in said grooves and to engage notches 12 therein as required, check pins 16 offset from said slippers 17, face plates 13 mounted on the sashes so that their angular positions thereon are variable, segmental slots 15 in said face plates to receive said pins, and counterbalance rope attachments 21 at the heels of said slippers 17, said ropes being arranged out of the vertical lines through the pivots of the slippers.

BENJAMlN JOSEPH BROWNJOHN.

Witnesses T. J. DENNY, H. C. CAMPBELL.

Uopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

